JP2004062025A - Stereoscopic projection device, screen used for the same, and projection method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stereoscopic projection device capable of making the presentation itself to be displayed in a state close to actual topography or merchandise on a screen give an appealing power or the like to the display by more realistically and stereoscopically expressing three-dimensional information of undulations or uneven forms of topography, merchandise or the like. <P>SOLUTION: A stereoscopic screen S for stereoscopically expressing the undulations of topography or shapes of merchandise is formed and, on the stereoscopic screen S, the picture of the topography or the merchandise is projected. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention projects the terrain or the visual information (image) of the product or the human body on a projection screen that three-dimensionally expresses three-dimensional shapes such as undulations of the terrain, products or the human body, The present invention relates to a three-dimensional projection device capable of three-dimensionally displaying the terrain projected on the screen, or a product, a human body, or the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, projection of various kinds of visual information relating to terrain, merchandise, and the like as a still image or a moving image on an ordinary flat screen has been quite commonplace. However, even if an image of a terrain or a product is projected on such a flat screen, letting all viewers of the image grasp the projected image as homogeneous three-dimensional image information is a problem. This is considerably difficult due to factors such as the flatness of the obtained image, or individual differences in the sensibility and aesthetics of the viewer.
[0003]
For example, aerial photographs and satellite photographs of terrain, even if they were taken in full color, for example, even if there is some shading, if green lands that appear in green are projected on a flat screen, It is impossible to grasp the undulation of the terrain from the photograph. This point is similar to the fact that it is difficult to grasp the details of the actual uneven shape of the product even if you try to show a product with complicated surface irregularities etc. It is.
[0004]
[Problems to be solved by the invention]
In view of the fact that it is difficult for the present invention to visually grasp three-dimensional information such as undulations and irregularities of a terrain or a product projected on a screen with the conventional projection method as described above, By displaying three-dimensional information such as undulations and irregularities in a more realistic and three-dimensional manner, the display itself is displayed on the screen in a state close to the actual terrain and products, and the display shows appealing power etc. It is an object of the present invention to provide a stereoscopic projection device capable of being provided.
[0005]
The present invention provides a new technology for a stereoscopic projection device for solving the above-described problem, a stereoscopic screen used for the projection device, and a projection method for projecting an image on the stereoscopic screen. It is an issue.
[0006]
[Means for Solving the Problems]
The configuration of the stereoscopic projection apparatus of the present invention made for the purpose of solving the above problems forms a three-dimensional screen that three-dimensionally expresses the undulation of the terrain and the shape of the product, and the three-dimensional screen includes the terrain and the product. Is projected.
[0007]
In the present invention, the above-mentioned three-dimensional screen may be either a type formed on one sheet or a type obtained by assembling a plurality of sheets. Further, the image projected on the three-dimensional screen can be projected from one image projection unit or a plurality of projection units.
[0008]
Further, the projection of the image in the present invention may be performed from either the front side or the back side of the three-dimensional screen. The image projected on the three-dimensional screen is not limited to a still image, and may be a moving image. The moving image is, for example, an eruption of a volcano in the same terrain, the state of the flow of pyroclastic flows and sediment flows thereby, or a moving image capturing the state of flooding of a river is superimposed on the image of the terrain. The projection is used when the occurrence state of the eruption or the like is reproduced on the volcano or river in the terrain projected on the three-dimensional screen.
[0009]
Further, by connecting a three-dimensional screen on which an image is projected to a computer, projecting a mouse pointer or a cursor on the screen, and scanning the pointer or the cursor on the terrain, the above-mentioned river flooding is prevented. It can also be formed to simulate the setting of embankments and the setting of sabo dams against debris flows.
[0010]
In the present invention, a three-dimensional screen on which the above-described image is projected is formed by, for example, processing a three-dimensional shape such as terrain with a cutting machine controlled by NC control or the like to form a mold, and using this mold. A three-dimensional screen is obtained by forming a three-dimensional shape such as the topography on a plate-shaped material such as a thin synthetic resin plate by vacuum forming. This plate-shaped material is preferably white, translucent or transparent, but is not limited thereto. Further, the three-dimensional screen may be formed by cutting a transparent synthetic resin material into a three-dimensional shape such as terrain using the same cutting machine as described above.
[0011]
When a white plate material is formed into a three-dimensional screen by the above-described vacuum forming, the plate material is formed along with the irregularities of the mold with partial elongation. When the material is formed into the three-dimensional screen of the present invention, the thickness becomes non-uniform, and the appearance can be discriminated. Therefore, in the present invention, a transparent plate-like material is formed into a three-dimensional screen by vacuum forming, and thereafter, the surface or / and the back surface of the screen is subjected to sandblasting or application of a white paint for the purpose of diffusing light. This makes the entire screen opaque or translucent in a substantially uniform state.
[0012]
The above-mentioned three-dimensional screen of the present invention can be arbitrarily written or erased with a marker pen or the like, and a three-dimensional screen for terrain prints basic map information such as prefectural borders, roads, railways, and rivers by printing or the like. It may be written in advance.
Further, a plurality of transparent three-dimensional screens having the same three-dimensional pattern are prepared, and basic map information such as the roads is individually written on each screen, and a three-dimensional screen on which necessary information is written is written. Alternatively, a usage form in which the topographic image is projected on only a three-dimensional screen and used can be adopted. Further, a mode in which one or more images of various map information are superimposed and projected on the three-dimensional screen on which the terrain image is projected can be adopted. The information that can be used in this way includes, in addition to the above example, information on the form of land use, distribution of air temperature, distribution of rare creatures, and planned road maps. Further, the image projected on the three-dimensional screen in the above-mentioned usage form is not limited to the above-mentioned terrain and map information, but may be a product, a human body, or other objects.
[0013]
In the three-dimensional projection device of the present invention, for example, when an image of the terrain corresponding to the unevenness is directly projected on a three-dimensional screen expressing the unevenness of the terrain, the unevenness on the screen and the unevenness of the image may be slightly shifted. . This is because when a scaled image of a portion corresponding to the unevenness is projected by a point light source onto the enlarged three-dimensional uneven surface expressed on the screen, the image light projected on the uneven surface of the screen is parallel light. It is caused by not being. Therefore, in the present invention, the image on the film surface is corrected in advance based on the positional relationship between the reduced-scale image of the film surface, the light source (point), and the screen surface, and the corrected image is displayed on a three-dimensional screen. The above-mentioned deviation is prevented by projecting the image on the screen. Note that when the unevenness (undulation) of the screen surface is small, the above-described deviation is small. In such a case, the image may not be corrected.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the stereoscopic projection apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view schematically illustrating the principle configuration of the stereoscopic projection apparatus of the present invention, and FIGS. 2 to 5 are side views for explaining an example of an arrangement relationship between a stereoscopic screen and a projection unit in the stereoscopic projection apparatus of the present invention. FIG. 6 is a schematic view for explaining the occurrence of a shift between a screen projected on a film projected onto a three-dimensional screen and an uneven portion of the screen. FIG. 7 is a cross-sectional view of an example of a mold showing the topography. FIG. 9 is a cross-sectional view of a state in which a three-dimensional screen is manufactured using this mold, and FIG. 9 is a cross-sectional view of an example of a three-dimensional screen.
[0015]
The mold D representing the terrain in FIG. 7 is controlled by NC control based on information on the terrain of a certain area based on numerical control data. For example, the surface of a plate 1 made of wood or synthetic resin or metal is controlled by a milling machine. In addition, it is formed by engraving (cutting) the three-dimensional shape 2 of the terrain. A mold D expressing the three-dimensional shape 2 of the terrain is arranged such that a synthetic resin thin plate 3 formed on a three-dimensional screen S is supported by a clamp CL or the like so as to face each other. By disposing the heater 4 and driving the heater 4, the entire surface of the thin plate 3 is softened so that the lower surface of the softened thin plate 3 overlaps the surface of the three-dimensional shape 2 of the mold D. The air remaining between the lower surface of the solid shape 3 and the surface of the three-dimensional shape 2 of the mold D is sucked by a vacuum pump or the like to bring the softened thin plate 3 into close contact with the surface of the three-dimensional shape 2. Upon cooling, a three-dimensional screen S in which the three-dimensional shape 2 is formed into the transferred three-dimensional shape 2 ′ with the cross-sectional shape of FIG. 9 is obtained.
[0016]
The three-dimensional screen S according to the present invention may be formed by engraving the three-dimensional shape 2 directly on a transparent synthetic resin plate, for example, without using the above-described vacuum molding method, and the three-dimensional screen S may be used. it can. In addition, the engraving of the mold D is not exactly a reproduction of the form of the product or the terrain, but is merely an engraving in a three-dimensional form (three-dimensional) that is roughly expressed simply. Even on the three-dimensional screen S, the projected image is expressed as a three-dimensional image having sufficient reality.
[0017]
The three-dimensional screen S manufactured as described above is disposed in, for example, an upper opening of a housing B constituting a part of the projection apparatus of the present invention as illustrated in FIG. 1 and housed inside the housing B. By projecting an image from a projection unit P such as a high-brightness, high-definition projector as an example for projecting an image corresponding to the transferred three-dimensional shape 2 ′ formed on the screen S on the screen S, An image of the terrain corresponding to the three-dimensional terrain represented on the three-dimensional screen S can be viewed on the screen S. In FIG. 1, a personal computer PC storing the map information of the terrain is connected to the projection means P, and the map information from the personal computer PC can be projected from the projection means P onto the terrain of the three-dimensional screen S. .
[0018]
As a result, the three-dimensional shape 2 'of the screen S displays an image projected from the projection means P, thereby exhibiting a sense of reality with a very high level of terrain. Can be grasped with a visual three-dimensional effect.
[0019]
Although the above description is an example of the terrain, the projection target in the present invention is a commodity or a product including an organism having various three-dimensional forms on the market, or a body or a part thereof (face, head, Hand or the like). In addition, the stereoscopic projection device of the present invention can adopt an arrangement form of the stereoscopic screen S and the projection means P in the modes illustrated in FIGS. 2 to 5, the same reference numerals as in FIG. 1 denote the same members, but F denotes a floor and W denotes a wall.
[0020]
In the projection of the three-dimensional shape by the three-dimensional projection device of the present invention, as shown in FIG. 6, the uneven topography 21 represented on the three-dimensional screen S and the image 22 of the film surface F corresponding to the uneven topography 21 are generated by the light source A. May cause a deviation from the uneven image 22 'projected on the screen S due to the light (see FIG. 2). This is because the light of the light source A passing through the film surface F does not reach the uneven surface 21 of the three-dimensional screen S by the parallel light. This is because the unevenness of the formed topography 21 does not match.
[0021]
Therefore, in the present invention, in order to solve the above inconvenience, the two-dimensional image 22 of the film surface F is formed into an image corrected in advance by an image processing technique, and the image 22 ′ of the projection surface does not deviate from the uneven topography 21 of the screen S. Or the deviation is negligible.
[0022]
【The invention's effect】
The present invention is as described above, and forms a three-dimensional screen that three-dimensionally expresses the undulation of the terrain, the shape of the product, and the like, so that the image of the terrain and the product can be projected on the three-dimensional screen. Since the stereoscopic projection device is configured, there is an effect that an image of the terrain, various commodities, or a human body or a part thereof can be expressed on the screen in a stereoscopic expression.
[0023]
ADVANTAGE OF THE INVENTION According to this invention, since a terrain, goods, or a person can be three-dimensionally represented on a three-dimensional screen with a three-dimensional form such as an uneven shape of an actual thing, for example, various natural phenomena on a three-dimensional topographic map are obtained. Simulations, such as studying the design and coloration of the product on the stereoscopic projection of the product, and simulation of the makeup on the stereoscopic projection of the body and its parts, etc. Further, it is possible to extend the use form of the image projected on the screen with convenience and reality.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically illustrating a principle configuration of a stereoscopic projection apparatus of the present invention; FIG. 2 is a side view for explaining a first example of an arrangement relationship between a stereoscopic screen and a projection unit in the stereoscopic projection apparatus of the present invention; FIG. 3 is a side view for explaining a second example of the arrangement relationship between the stereoscopic screen and the projection means in the stereoscopic projection apparatus of the present invention. FIG. 4 is a third view showing the arrangement relation between the stereoscopic screen and the projection means in the stereoscopic projection apparatus of the present invention. FIG. 5 is a side view for explaining an example. FIG. 5 is a side view for explaining a fourth example of an arrangement relationship between the stereoscopic screen and the projection means in the stereoscopic projection apparatus of the present invention. FIG. 7 is a schematic view for explaining the occurrence of a displacement between a screen and an uneven portion of the screen. FIG. 7 is a cross-sectional view of an example of a mold showing terrain. FIG. 8 is a state in which a three-dimensional screen is manufactured using the mold. Cross section of [ 9] cross-sectional view of one example of a stereoscopic screen EXPLANATION OF REFERENCE NUMERALS
S Three-dimensional screen B Casing P Projecting means D Mold 1 Wooden board 2 Three-dimensional shape 2 'Transfer three-dimensional shape 3 Synthetic resin thin plate 4 Heater

Claims (4)

A three-dimensional projection device, wherein a three-dimensional screen is formed that three-dimensionally represents the undulation of the terrain, the shape of a product, and the like, and the image of the terrain and the product is projected on the three-dimensional screen. A three-dimensional shape such as a terrain is processed by a cutting machine controlled by NC control or the like to form a mold, and the three-dimensional shape is formed into a plate-like material such as a thin synthetic resin plate by vacuum forming using the mold. Screen of stereoscopic projection device. A screen of a three-dimensional projection device that forms a three-dimensional shape such as terrain by cutting a transparent synthetic resin material with a cutting machine. When projecting the image of the film surface on the three-dimensional screen, in order to prevent a deviation of the image corresponding to the three-dimensional shape irregularities formed on the three-dimensional screen and the irregularities of the film surface projected, the image of the film surface is previously A stereoscopic projection method that corrects and projects on the screen.

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